Authorities on Tuesday released the identity of the man who was found unresponsive in his cell at the Cumberland County Jail two weeks ago.

Kevin Whitford, 65, of Sanford, was booked into the Portland jail by the U.S. Marshals Service on Jan. 8, 2022, Capt. Donald Goulet of the Cumberland County Sheriff’s Office said in a statement.

A corrections officer discovered Whitford unresponsive in his cell while making rounds at 9:57 a.m. on July 6. The officer called for assistance, but jail security, medical staff, and a Portland’s ambulance service crew were unable to revive Whitford.

Goulet said Whitford was booked into the corrections facility as a federal prisoner, but Goulet said he did not know what he was charged with.

Records obtained from the U.S. District Court of Maine indicate that Whitford, also known as Kevin Murphy, was sentenced on June 21, 2022, for violating the conditions of his supervised release. He was sentenced to 36 months in federal prison.

Portland police are investigating Whitford’s death. A spokesman for the Portland Police Department said it took longer than expected to release Whitford’s identity because it took time to locate and notify his next of kin, several of whom are living in other states.

The cause and manner of Whitford’s death will be determined by the Office of the Chief Medical Examiner.